[Gambas-user] EOF problem

[Ed & Clare Kelm]

Thanks for the quick reply!

1.  The problem is independent of the contents of the text file. 

2.  I tried a more complicated test program in which there are TWO 
buttons, and TWO different text files.  This behaves similarly;  most of 
the time, failure of one button/file will be  accompanied by  failure of 
the other, but not always.   Very occasionally, one button/file will 
work, one will fail.

3.  According to Synaptics Package Manager I have the latest version of 
Gambas available, called 2.8.2-1build1 - if there is a newer version, 
how would I find and install it? 

4.  Would it be worth trying an upgrade to Ubuntu 9.10?

Regards,

Ed K.

Benoît Minisini wrote:
>> Hi!
>>
>> I'm having a problem reliably reading a text file.
>>
>> I am using:
>>
>> Panasonic CF-51 Toughbook
>> Ubuntu 9.04 , Kernel 2.6.28-18
>> Gambas 2.8, QT
>>
>> Below is the code for a test program which demonstrates the problem.
>> This is a simple form, with one button, and one label. The only code is
>> the Button1_click event shown.  The file "testdat.txt" contained in
>> Fname is a text file with one short line of text, created with GEDIT.
>>
>> One would expect that clicking Button1 would open the file, read the
>> line of text, and place it into label1.  Indeed, this is exactly what
>> happens roughly 4 times out of 5.  However, sometimes the file comes up
>> empty, with an immediate EOF.  When the program is first started from
>> the IDE, if it works correctly the first time, it will do so every time
>> the button is clicked.  However, if it fails (indicates EOF) the first
>> time, it will fail everytime the button is clicked.  Stopping the
>> program and restarting it will roll the dice anew.  There does not seem
>> to be any pattern to the failure.  It might happen twice in a row, it
>> might not happen for 10 starts.
>>
>> Does anybody have any ideas?  Is this an Ubuntu issue?
>>
>> Thanks!
>>
>> Ed K.
>>
>>
>> PUBLIC SUB Button1_Click()
>>
>>    DIM tfile AS File
>>    DIM Fname AS String
>>
>>    Fname = "/home/us/Documents/testdat.txt"
>>
>>    tfile = OPEN Fname FOR READ
>>
>>    label1.Text = ""
>>
>>    IF Eof(tfile) THEN
>>       label1.Text = "EOF"
>>    ELSE
>>       LINE INPUT #tfile, label1.Text
>>    END IF
>>
>>    CLOSE #tfile
>>
>> END
>>
>>     
>
> I cannot reproduce the problem with the same code. Does it occur whatever the 
> contents of 'testdat.txt' is? Can you try the latest version of Gambas 2?
>
>